Numerous projects for the retrospective digitisation of library collections are carried out at the Bayerische Staatsbibliothek. These projects are funded by the German Research Foundation or by the Bayerisches Staatsministerium für Bildung und Kultus, Wissenschaft und Kunst, take place within the framework of a public-private partnership with the company Google, or are also funded and steered by the library itself. Some projects concern the holdings of the Bayerische Staatsbibliothek alone, others are set up in co-operation with other libraries. As a result, digital copies of manuscripts, historical reference books, encyclopedias, source editions and -collections as well as digital copies of other copyright-free books and periodicals are made freely available on the Internet.